Ogulnius hapalus, Zhao, Qingyuan & Li, Shuqiang, 2012

Zhao, Qingyuan & Li, Shuqiang, 2012, Eleven new species of theridiosomatid spiders from southern China (Araneae, Theridiosomatidae), ZooKeys 255, pp. 1-48 : 14-16

Ogulnius hapalus sp. n. Figs 1921

Material examined.

Holotype: CHINA, Yunnan: Menglun Town: Xishuangbanna Botanical Garden, 21°55.035'N, 101°16.500'E, elevation ca 558 m, 22 July 2007, primary tropical seasonal rain forest, fogging, G. Zheng (IZCAS), 1 male.

Paratypes: [same data as holotype] (IZCAS), 2 males, 6 females.

Etymology.

This specific name describes the softness and fragility of this species. The Latin origin is ‘hapalus’ meaning 'delicate and tender’; adjective.

Diagnosis.

Though lack of one genetic feature, which is fourth legs are longer than the first legs (subequal in females), other generic characteristics of Ogulnius can be seen in this species: tapering whip-like embolic apophysis in males (Fig. 19C), transverse grooves on epigyne in females, separated and juxtaposed posterior median eyes ( Coddington 1986). Males distinguished from other described Ogulnius species by the shape of median apophysis and the proportion of embolic apophysis. The median apophysis in Ogulnius hapalus .is similar to that in Ogulnius gloriae ( Coddington 1986: fig. 99): mesally wide, with a projection oriented distoventrally (Fig. 19A). The embolic apophysis is proportionately longer than that in Ogulnius barbandrewsi ( Miller et al. 2009: fig. 5F). The Females distinguished by the routing of copulatory ducts and the peanut-shaped spermathecae. The fold made by the copulatory ducts is bending outwardly (Fig. 20B), instead of in wardly as in Ogulnius barbandrewsi (Miller et al. 1986: fig. 3D). The posterior lip of epigyne in Ogulnius hapalus concave in stead of convex as in Ogulnius pullus ( Brignoli 1981: fig.1).

Description.

Carapace pale yellow. Sternum ivory. Legs pale yellow, semi-transparent. Abdomen pale with soft, translucent cuticle.

Male pedipalp: Patella with strong sinuous macroseta. Tibia with one trichobothrium. Paracymbium slim with filiform projection distally. Median apophysis curvy, mesally wide, with apex oriented distoventrally (Figs 19A, 21A). Conductor a translucent theca covering about two thirds length of the long filiform embolic apophysis (Figs 19 C–D).

Vulva: Epigyne with transverse groove and a concave posterior margin (Fig. 20A). Spermathecae peanut-shaped, juxtaposed (Fig. 20B). Copulatory ducts bend downwardly at top and wide at entrance (Figs 20B, 21B).

Male: Total length 1.00, carapace 0.50 long, 0.40 wide, clypeus 0.09, sternum 0.25 long, 0.25 wide, coxae IV separated by 2.00 times their width. Posterior median eyes separated by 1.5 times their diameter. Macrosetae: Leg I: patella d 1, tibia d 1, p 1; Leg II: patella d 1, tibia d 1; Leg III: patella d 1, tibia d 1; Leg IV: patella d 1, tibia d 1. Metatarsal trichobothria: Tm I: 0.23; Tm II: 0.19; Tm III: 0.27. Leg measurements: I 1.00 (0.30, 0.18, 0.20, 0.20, 0.12); II 0.87 (0.26, 0.12, 0.20, 0.16, 0.13); III 0.57 (0.11, 0.10, 0.11, 0.15, 0.10); IV 0.64 (0.15, 0.10, 0.14, 0.15, 0.10).

Female: Total length 1.41, carapace: 0.50 long, 0.44 wide, clypeus 0.23, sternum 0.30 long, 0.25 wide, coxae IV separated by 2.00 times their width. Posterior median eyes separated 1.5 times their diameter. Macrosetae as in male. Metatarsal trichobothria: Tm I: 0.25; Tm II: 0.21; Tm III: 0.27. Leg measurements: I 0.95 (0.20, 0.25, 0.15, 0.20, 0.15); II 0.82 (0.25, 0.12, 0.15, 0.15, 0.15); III 0.62 (0.12, 0.10, 0.15, 0.15, 0.10); IV 0.90 (0.30, 0.15, 0.15, 0.20, 0.10).